Briana with Her Oncologist, Dr. Ted Laetsch (image) UT Southwestern Medical Center Share Print E-Mail Caption Briana Ayala, left, with her oncologist, Dr. Ted Laetsch. Dr. Laetsch had Briana's tumor tested for a TRK fusion and then successfully treated her with larotrectinib. Credit UT Southwestern Medical Center Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.